The passive and castrated attitude of the Europeans in the face of the current invasion of Muslims and Africans shows why this is true.
By choosing pacifism in the face of invasion they also choose all the evils which will befall them and their women and their children because of their high mind cowardice.
In the end, every wall and every boundary and every frontier must be built on blood. Otherwise, it is simply a thin veil or curtain, an invitation to violation.
The sad state of our own country also reveals this truth.
There are far worse things than a little blood shed at the beginning.